Patent US6986789B2 successfully refreshed from Google Patents.
US6986789B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intervertebral implant
Assignee: Aesculap AG
•
Filing: 2004-07-06
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Granted: 2006-01-17
•
Expires: 2024-07-06
Abstract
Abstract An intervertebral implant is provided, including an upper support body including a dorsal edge, a lower support body including a dorsal edge, and a saddle joint. The saddle joint includes two pivot axes and two saddle-shaped joint surfaces in contact with one another rotated by 90° in relation to one another. The upper and lower support bodies are supported pivotably in relation to one another via the saddle joint.
Inventors
- 👤 Robert Schultz
- 👤 Stephan Lindner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:55
CPC Classifications
A; A61; A61L; A61L27/00; A61L27/02; A61L27/04; A61L27/06; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/44; A61F2/442; A61F2/4425; A61L27/14; A61L27/18; A61F2002/30001; A61F2002/30108; A61F2002/30199; A61F2002/30301; A61F2002/30621; A61F2002/30649; A61F2002/30654; A61F2/30767; A61F2/30771; A61F2002/30878; A61F2002/30884; A61F2002/443; A61F2230/00; A61F2230/0063; A61F2230/0095; A61F2310/00; A61F2310/00005; A61F2310/00011; A61F2310/00023; A61F2310/00179; A61L2430/00; A61L2430/38
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
144 words
An intervertebral implant comprising: an upper support body comprising a dorsal edge; a lower support body comprising a dorsal edge; a saddle joint comprising two pivot axes and two saddle-shaped joint surfaces in contact with one another rotated by 90° in relation to one another; and two joint bodies, wherein each of said joint surfaces is part of a respective one of said joint bodies, and each of said joint bodies is inserted into a respective one of said support bodies, at least one of said joint bodies is rotatable in relation to said respective support body receiving said joint body around a pivot axis extending transversely to said two pivot axes of said saddle joint, said upper and lower support bodies are supported pivotably in relation to one another via said saddle joint, and said joint surfaces are made of a ceramic material.
Claim 2
Dependent Claim
144 words
An intervertebral implant comprising: an upper support body comprising a dorsal edge; a lower support body comprising a dorsal edge; a saddle joint comprising two pivot axes and two saddle-shaped joint surfaces in contact with one another rotated by 90° in relation to one another; and two joint bodies, wherein each of said joint surfaces is part of a respective one of said joint bodies, and each of said joint bodies is inserted into a respective one of said support bodies, at least one of said joint bodies is rotatable in relation to said respective support body receiving said joint body around a pivot axis extending transversely to said two pivot axes of said saddle joint, said upper and lower support bodies are supported pivotably in relation to one another via said saddle joint, and said joint surfaces are made of a ceramic material.
Claim 3
Dependent Claim
32 words
The implant of claim 1 , wherein one of said joint surfaces is directed in an anterior-posterior direction and the other one of said joint surfaces is directed in a lateral direction.
Claim 4
Dependent Claim
28 words
The implant of claim 1 , wherein said saddle joint is arranged between a middle portion of said support bodies and said dorsal edges of said support bodies.
Claim 5
Dependent Claim
26 words
The implant of claim 1 , wherein each of said support bodies and its respective joint surface is made in one piece of a ceramic material.
Claim 6
Dependent Claim
23 words
The implant of claim 1 , wherein at least one of said joint bodies is inserted into said respective support body without clearance.
Claim 7
Dependent Claim
25 words
The implant of claim 5 , wherein at least one of said joint bodies is secured in said respective support body via a conical clamping.
Claim 8
Dependent Claim
21 words
The implant of claim 5 , wherein at least one of said support bodies is shrunk onto said respective joint body.
Claim 9
Dependent Claim
26 words
The implant of claim 5 , wherein at least one of said joint bodies is fixed at said respective support body by means of locking screws.
Claim 10
Dependent Claim
27 words
The implant of claim 5 , wherein at least one of said joint bodies is fixed at said respective support body by means of elastic intermediate elements.
Claim 11
Dependent Claim
23 words
The implant of claim 1 , wherein said rotatable joint body is received rotatably in a rotationally symmetrical recess of said support body.
Claim 12
Dependent Claim
32 words
The implant of claim 1 , wherein said rotatable joint body comprises a bearing part secured rigidly in said support body, and a joint surface part rotatable around an axis of rotation.
Claim 13
Dependent Claim
35 words
The implant of claim 11 , wherein a layer comprising a low-friction and/or wear-reducing material is arranged between said joint body and said support body and between said bearing part and said joint surface part.
Claim 14
Dependent Claim
26 words
The implant of claim 11 , wherein said bearing part and said joint surface part are rotatably connected to one another via a central bearing journal.
Claim 15
Dependent Claim
26 words
The implant of claim 11 , wherein said bearing part comprises a bearing shell, and said joint surface part is rotatably received in said bearing shell.
Claim 16
Dependent Claim
21 words
The implant of claim 1 , wherein each of said joint surfaces comprises a radius between 4 mm and 7 mm.
Claim 17
Dependent Claim
21 words
The implant of claim 1 , wherein said support bodies are made of titanium, a titanium alloy, or a chromium-cobalt alloy.
Claim 18
Dependent Claim
16 words
The implant of claim 1 , wherein said support bodies are made of polyether ether ketone.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2009-01-16 | 2009-07-18 | 2010-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2013-01-16 | 2013-07-18 | 2014-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2017-01-16 | 2017-07-18 | 2018-01-17 | $7700.00 | Window Closed / Lapsed |